Sony Ericsson K200i - Manual (Page 46)

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Keypad lock
Lock the keypad to avoid dialling a number by accident.
You can still answer a call and the keypad locks again
after it.
% 6 To lock or unlock the keypad.
Automatic keylock
Automatic keylock in standby means the keypad is locked
a short while after you last pressed a key.
To turn the automatic keylock on or off
From standby select
Menu
}
Settings
}
Advanced
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Auto keylock and select an option.
SIM card lock
The SIM card lock protects your subscription, but not
your phone itself, from unauthorized use. If you change
SIM cards, the phone still works with the new SIM card.
Most SIM cards are locked at the time of purchase.
If the SIM card lock is on, you have to enter a PIN (Personal
Identity Number) every time you turn on your phone.
If you enter your PIN incorrectly three times in a row,
the SIM card is blocked. This is indicated by the message
PIN blocked . To unblock it, you need to enter your PUK
(Personal Unblocking Key). Your PIN and PUK are
supplied by your network operator. You can edit your
PIN and turn off your SIM card lock at any time.
Calls to the international emergency number 112
can still be made, even when the keypad is locked.
If the message Passwords do not match appears
when you edit your PIN, you entered the PIN or PIN2
incorrectly.
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